Patents by Inventor Junping YAN

Junping YAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Positive electrode material for lithium-sulfur battery, preparation method therefor, and applications thereof
    Patent number: 11201331
    Abstract: There is provided a positive electrode material for a lithium-sulfur battery, including a sulfur-rich polymer and graphene, wherein an internal structure of the sulfur-rich polymer is an interpenetrating network structure; the graphene is doped in the sulfur-rich polymer; a particle size of the sulfur-rich polymer is 100-300 meshes; and the number of flake layers of the graphene is 2-10. A preparation method includes: crushing a prepared sulfur-rich polymer into powder, adding a solvent to obtain a solution, performing sufficient stirring processing; performing ultrasonic dispersion on graphene in a solvent to generate a suspension; and mixing the two solutions, then continuing to perform ultrasonic dispersion and stirring, and finally removing the solvent and drying a product to obtain the positive electrode material for a lithium-sulfur battery.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: December 14, 2021
    Inventors: Dun Chi, Junping Yan
  • POSITIVE ELECTRODE MATERIAL FOR LITHIUM-SULFUR BATTERY, PREPARATION METHOD THEREFOR, AND APPLICATIONS THEREOF
    Publication number: 20200044253
    Abstract: There is provided a positive electrode material for a lithium-sulfur battery, including a sulfur-rich polymer and graphene, wherein an internal structure of the sulfur-rich polymer is an interpenetrating network structure; the graphene is doped in the sulfur-rich polymer; a particle size of the sulfur-rich polymer is 100-300 meshes; and the number of flake layers of the graphene is 2-10. A preparation method includes: crushing a prepared sulfur-rich polymer into powder, adding a solvent to obtain a solution, performing sufficient stirring processing; performing ultrasonic dispersion on graphene in a solvent to generate a suspension; and mixing the two solutions, then continuing to perform ultrasonic dispersion and stirring, and finally removing the solvent and drying a product to obtain the positive electrode material for a lithium-sulfur battery.
    Type: Application
    Filed: January 8, 2018
    Publication date: February 6, 2020
    Inventors: Dun CHI, Junping YAN